From: Eric S. Raymond <esr@thyrsus,com>
Date: Wed, 18 Feb 2004 22:44:39 +0000 (+0000)
Subject: Figure 10 added.
X-Git-Tag: 1.0~73
X-Git-Url: http://thyrsus.com/gitweb/?a=commitdiff_plain;h=e02a4a616ce936395efa61d4c53090dd30c372c8;p=mad.git

Figure 10 added.
---

diff --git a/doc/mad-manual.xml b/doc/mad-manual.xml
index 82440db..798b0b7 100644
--- a/doc/mad-manual.xml
+++ b/doc/mad-manual.xml
@@ -9,6 +9,7 @@
 <!ENTITY truthtable SYSTEM "../madhouse/truthtable.mad">
 <!ENTITY simpsfunc SYSTEM "../madhouse/simpsfunc.mad">
 <!ENTITY simpsmain SYSTEM "../madhouse/simpsmain.mad">
+<!ENTITY findroot SYSTEM "../madhouse/findroot.mad">
 <!ENTITY scope1 SYSTEM "scope1.xml">
 <!ENTITY scope2 SYSTEM "scope2.xml">
 <!ENTITY scope3 SYSTEM "scope3.xml">
@@ -303,7 +304,12 @@ D were corresponding shapes.</para>
 
 <para>The PIC diagrams preserve the logic of the original hand-drawn
 ones, but are not exact geometrical duplicates.  The proportions of
-the flowchart elements are slightly different.</para>
+the flowchart elements are slightly different.  One detail we have not
+preserved is that in Chapter 3, PRINT-statement boxes are left-right
+reversed from their orientation in Chapter 2 (this shows in the
+bottom curve.) Where the original used monospaced fonts and 
+hand-drawn Greek characters, PIC and EQN give us typeset formulas
+quite a bit better looking.</para>
 
 <para>In the original, sections were numbered only down to three
 levels deep. No per-chapter tables of contents were present.</para>
@@ -3231,6 +3237,42 @@ READ	READ FORMAT INPUTS,A,B,N,R
 </programlisting>
 <!-- beginpage -->
 
+</sect2>
+<sect2><title>Example 4</title>
+
+<!-- FIXME -->
+
+
+<!-- beginpage -->
+<para><emphasis>Flow diagram:</emphasis></para>
+
+<mediaobject>
+  <imageobject>
+    <imagedata fileref='fig10.png'/>
+  </imageobject>
+</mediaobject>
+<!-- beginpage -->
+
+<para><emphasis>Program:</emphasis>It is assumed here that f
+(referred to as F. in the program) will be defined as an internal
+function.)</para>
+
+<para><emphasis>Definition:</emphasis> SIGN.(Z) = Z/|Z|</para>
+
+<note><para>A sample F. is actually specified in the listing.
+Specifying F this way makes more sense if one recalls that MAD
+programs were punched-card decks.  An internal function definition was
+typically a single card that could be slipped anywhere into the 
+program deck.</para></note>
+
+<!-- pagebreak after the VECTOR VALUES ABEPS line -->
+<programlisting>
+&findroot;
+*DATA
+          1.          2.          .01
+</programlisting>
+<!-- pagebreak -->
+
 </sect2>
 </sect1>
 </chapter>